n8n assembles the checks. A Blueprint declares them in one file.
n8n can self-host and supports AI agents, output parsers and Guardrails nodes. A Blueprint declares the session's context, tools and optional schema in one reviewable file; on Barndoor, each call also passes through gateway policy.
Head to head
Barndoor Automations vs. n8n, row by row
Barndoor Automations | n8n Source-available workflow automation | |
|---|---|---|
The AI step What the model can see and reach | A scoped session: only the context you pass and the tools you enable for that step. On Barndoor, only what your policy allows. | AI Agent and Guardrails nodes the builder adds and wires together. |
Output contract Checked before anyone trusts it | Give a session a schema, and Frags validates the model's answer before the next step, or the caller, trusts it. A run that can't meet it stops and says so. | A Structured Output Parser node can enforce a declared JSON schema on an agent's response. |
What you review The thing that actually runs | One FML file, written from plain English, diffed in a pull request and checked before it runs. | Built on a canvas, by hand or with the AI builder. Workflow history and Git-based environment promotion are available; the definition is JSON. |
What the caller gets Over API or MCP | JSON in the shape the Blueprint declares, over API or MCP. | Whatever the last node returns, over a webhook or the MCP Server Trigger. |
Whose identity it runs as Step by step | On Barndoor: the person who starts or schedules it. A step that needs more access runs as a service account the Blueprint names, for that step only. | Nodes use the credentials configured for the workflow, which can be shared within a project. |
Policy and audit Every model and tool call | On Barndoor: policy checks every model and tool call, and each run gets one audited record of every call, with cost. | Project roles and SSO on paid plans. Per-step controls are nodes the builder adds. |
Where it runs Your infra, your model | Our cloud, or the open-source Frags runtime in your VPC or on premises, with the model you choose. | n8n's cloud, or a self-hosted install of the whole platform. |
The AI step
What the model can see and reach
BARNDOOR AUTOMATIONS
A scoped session: only the context you pass and the tools you enable for that step. On Barndoor, only what your policy allows.
N8N
AI Agent and Guardrails nodes the builder adds and wires together.
Output contract
Checked before anyone trusts it
BARNDOOR AUTOMATIONS
Give a session a schema, and Frags validates the model's answer before the next step, or the caller, trusts it. A run that can't meet it stops and says so.
N8N
A Structured Output Parser node can enforce a declared JSON schema on an agent's response.
What you review
The thing that actually runs
BARNDOOR AUTOMATIONS
One FML file, written from plain English, diffed in a pull request and checked before it runs.
N8N
Built on a canvas, by hand or with the AI builder. Workflow history and Git-based environment promotion are available; the definition is JSON.
What the caller gets
Over API or MCP
BARNDOOR AUTOMATIONS
JSON in the shape the Blueprint declares, over API or MCP.
N8N
Whatever the last node returns, over a webhook or the MCP Server Trigger.
Whose identity it runs as
Step by step
BARNDOOR AUTOMATIONS
On Barndoor: the person who starts or schedules it. A step that needs more access runs as a service account the Blueprint names, for that step only.
N8N
Nodes use the credentials configured for the workflow, which can be shared within a project.
Policy and audit
Every model and tool call
BARNDOOR AUTOMATIONS
On Barndoor: policy checks every model and tool call, and each run gets one audited record of every call, with cost.
N8N
Project roles and SSO on paid plans. Per-step controls are nodes the builder adds.
Where it runs
Your infra, your model
BARNDOOR AUTOMATIONS
Our cloud, or the open-source Frags runtime in your VPC or on premises, with the model you choose.
N8N
n8n's cloud, or a self-hosted install of the whole platform.
Rows marked “On Barndoor” describe Barndoor Automations running on the Barndoor AI gateway. On the standalone product, Blueprints are shared with named users who sign in with OAuth, every run is kept in execution history, and SSO, SAML and audit logs are coming soon on Enterprise. The n8n column is based on its public documentation as of September 28, 2026. n8n is a trademark of its owner.
What changes with a Blueprint
Checks declared together
The session's context, allowed tools and optional output schema live together in FML, instead of separate nodes on a canvas.
Readable source
One FML file written for people, diffed in a pull request and checked before it runs. n8n also supports Git, but stores the workflow definition as node-graph JSON.
Governed on every step
On Barndoor, each step runs as the person who started or scheduled it, and policy checks every model and tool call, with one audited record per run.
Bring the workflow, not the canvas
Describe what your current workflow does in plain English. The assistant explores your connected tools, writes the Blueprint, and checks it before it runs. Start on the free plan, with no credit card.
Other comparisons
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